World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
28
Citations
2086
World Ranking
2747
National Ranking
775

Overview

John W. Walker is affiliated with Texas A&M University in the United States and has an extensive publication record within Environmental Science and Agricultural and Biological Sciences. Their work spans multiple subfields, including Agronomy and Crop Science, Ecology, Management, Monitoring, Policy and Law, Molecular Biology, and Global and Planetary Change.

Walker's research topics cover a broad range of subjects related to ruminant nutrition and digestive physiology, rangeland and wildlife management, landslides and related hazards, karst systems and hydrogeology, spectroscopy and chemometric analyses, meat and animal product quality, as well as plant toxicity and pharmacological properties.

Recent papers include:

  • Saving imperiled grassland biomes by recoupling fire and grazing: a case study from the Great Plains (2021, Frontiers in Ecology and the Environment)
  • Woody plant encroachment modifies carbonate bedrock: field evidence for enhanced weathering and permeability (2023, Scientific Reports)
  • Hsp90 inhibition leads to an increase in surface expression of multiple immunological receptors in cancer cells (2024, Frontiers in Molecular Biosciences)
  • Applicability of soil moisture sensors for monitoring water dynamics in rock: A field test in weathered limestone (2021, Vadose Zone Journal)
  • Raman spectroscopy of fresh feces is a practical tool for identifying animal species and estimating diet characteristics (2021, Animal Feed Science and Technology)

Frequent coauthors who have collaborated with Walker multiple times include Bradford P. Wilcox, Danilo Gusmão de Quadros, Pedro A. M. Leite, Kevin J. McInnes, and Samuel D. Fuhlendorf.

Walker's research has appeared in several peer-reviewed venues, with multiple publications in the Journal of Animal Science. Other frequent journals include Animal, Translational Animal Science, Frontiers in Ecology and the Environment, and Scientific Reports.

Best Publications

  • Some effects of a rotational grazing treatment on quantity and quality of available forage and amount of ground litter.

    R.K. Heitschmidt;S.L. Dowhower;J.W. Walker

  • Viewpoint: Grazing management and research now and in the next millennium

    John W. Walker

  • Synthesis Paper: Targeted Livestock Grazing: Prescription for Healthy Rangelands

    Derek W. Bailey;Jeffrey C. Mosley;Richard E. Estell;Andres F. Cibils

  • Cover components on long-term seasonal sheep grazing treatments in three-tip sagebrush steppe.

    Edward W. Bork;Neil E. West;John W. Walker

  • Training lambs to be weed eaters: Studies with leafy spurge

    John W. Walker;K. G. Hemenway;P. G. Hatfield;H. A. Glimp

  • Assessment of Animal-Based Methods Used for Estimating and Monitoring Rangeland Herbivore Diet Composition☆

    Sarah Garnick;Perry S. Barboza;John W. Walker

  • Some effects of a rotational grazing treatment on cattle preference for plant communities.

    John W. Walker;Rodney K. Heitschmidt;Steve L. Dowhower

  • Comparison of sheep and goat preferences for leafy spurge

    John W. Walker;Scott L. Kronberg;Saud L. Al-Rowaily;Neil E. West

  • Effect of Various Grazing Systems on Type and Density of Cattle Trails

    John W. Walker;R. K. Heitschmidt

  • 14- vs. 42-Paddock rotational grazing: aboveground biomass dynamics, forage production, and harvest efficiency.

    R.K. Heitschmidt;S.L. Dowhower;J.W. Walker

  • Cow/calf production and economic returns from yearlong continuous, deferred rotation and rotational grazing treatments

    R. K. Heitschmidt;J. R. Conner;S. K. Canon;W. E. Pinchak

  • Sequential analysis of cattle location: Day-to-day movement patterns

    D.W. Bailey;J.W. Walker;L.R. Rittenhouse

  • Ruminal metabolism of leafy spurge in sheep and goats : a potential explanation for differential foraging on spurge by sheep, goats, and cattle

    Scott L. Kronberg;John W. Walker

  • Fecal NIRS for predicting percent leafy spurge in diets.

    John W. Walker;D.H. Clark;Scott D. McCoy

  • Breed and maternal effects on the intake of tannin-rich browse by juvenile domestic goats (Capra hircus)

    Tzach Aharon Glasser;Eugene David Ungar;Serge Yan Landau;Avi Perevolotsky

  • Quality and botanical composition of cattle diets under rotational and continuous grazing treatments.

    John W. Walker;Rodney K. Heitschmidt;Elino A. D;Merwyn M. Kothmann

  • Calibrating fecal NIRS equations for predicting botanical composition of diets.

    John W. Walker;Scott D. Mccoy;Karen L. Launchbaugh;Merrita J. Fraker

  • Effects of Supplementation on Juniper Intake by Goats

    Erika S. Campbell;Charles A. Taylor;John W. Walker;Christopher J. Lupton

  • A fecal near-infrared reflectance spectroscopy-aided methodology to determine goat dietary composition in a Mediterranean shrubland.

    T. Glasser;S. Landau;E. D. Ungar;A. Perevolotsky

  • Development of a contagious ecthyma vaccine for goats.

    Jeffrey M. B. Musser;Charles A. Taylor;Jianhua Guo;Ian R. Tizard

  • Foraging selectivity of three goat breeds in a Mediterranean shrubland

    T.A. Glasser;S.Y. Landau;E.D. Ungar;A. Perevolotsky

Frequent Co-Authors

Serge Yan Landau
Serge Yan Landau Agricultural Research Organization
Eugene D. Ungar
Eugene D. Ungar Agricultural Research Organization
Avi Perevolotsky
Avi Perevolotsky Agricultural Research Organization
Neil E. West
Neil E. West Utah State University
Derek W. Bailey
Derek W. Bailey New Mexico State University
Robert P. Adams
Robert P. Adams Baylor University
Edward W. Bork
Edward W. Bork University of Alberta
Bradford P. Wilcox
Bradford P. Wilcox Texas A&M University
James P. Muir
James P. Muir Texas A&M University
Thomas H. Welsh
Thomas H. Welsh Texas A&M University

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Related Online Degrees & Career Pathways

For students interested in Animal Science and Veterinary studies, related online degrees often open doors to specialized career pathways in health and behavioral sciences. Exploring nasp accredited school psychology programs can be a natural extension for those passionate about animal behavior and mental health.

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For those leaning toward therapeutic support roles, earning a substance abuse counselor degree online can prepare graduates to address critical behavioral health issues in both human and animal-assisted therapy contexts.

Additionally, online marriage and family therapy programs offer flexible paths for professionals aiming to integrate family dynamics and counseling skills, which are invaluable when considering the broader impact of caregiving in veterinary and animal-related fields.

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